Subject: Radio Software Version Y169 – Multiple Updates for IOK

Brand:

Model:

Model
Year:
from

to

Silverado 1500 New (RPO J22, VIN Digit 5 = A /
D)

2022 2022

Silverado 1500

2023 2023

Silverado 2500/3500

2024 2024

Suburban

2022 2023

Tahoe

2022 2023

Sierra 1500 New (RPO J22, VIN Digit 5 = H / U)

2022 2022

Sierra 1500

2023 2023

Sierra 2500/3500

2024 2024

Yukon
Yukon XL

2022 2023

Chevrolet

GMC

Involved Region or Country

VIN:

Engine:

Transmission:

from ot

North America, Europe, Uzbekistan, Russia, Middle East, Bolivia (West), Chile (West), Colombia
(West), Ecuador (West), Peru (West), Japan, Cadillac Korea (South Korea), Thailand (ASEAN), Other
Africa, Argentina, Brazil, Paraguay, Uruguay

Additional Options (RPOs) Equipped with RPO IOK
Condition

Some customers may comment on software related issues. Continuous improvement software updates
are being released with improvements made in several areas.

Cause

The cause of the condition may be software anomalies.

Correction

A new radio software update, version Y171 bulletin 23-NA-183, was released to service for vehicles
equipped with Infotainment system RPO IOK. In addition to providing general robustness and stability
enhancements, this update includes all enhancements from previous software version releases. Along
with the vehicles mentioned above, vehicles in unconnected markets, and fleet customers may need
the dealer to reprogram the radio with the new software package.

Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws
applicable to the activities it performs under this bulletin, including but not limited to handling, deploying,
preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a conflict
between the procedures set forth in this bulletin and the laws that apply to your dealership, you must follow
those applicable laws.
Y169 Most Notable Improvements
Important: Improvements will vary by model, build configuration, system, and sales region. Not all vehicles have all
features.
Volume might ramp up to full after using the SWC to increase volume
The system displays "Park Assist with Braking" instead of "Park Assist"
Customer might not be able to hear Google Assistant When there is an incoming call the notification comes up at the
same time as the incoming call screen
When changing PTM from Off to On the setting does not apply

The Wi-Fi Hotspot screen will not load
SXM shows the wrong channel
After cycling the speed limit recognition option, if you switch display mode the message will come up "menu unavailable
while driving"
No audio with radio volume set to about 40%
If the system is locked with a PIN the cluster maybe blank or show "Application Unavailable"
Customer might see an "Android Auto Could Not Connect" message even though there is no concern
The trailering app may show the wrong make of truck
When pressing the OK button on the "Focus your attention on driving" screen the screen may come back up
When switch from an AM favorite to the SXM Welcome screen the favorite may stay highlighted
When turning the vehicle off and opening the door there could be a Bluetooth disconnected screen that comes up with
the "Cancel" option truncated
If the "Back" button is pressed twice in a row it might not take you back to the expected page
SXM favorites greyed out and unavailable
Vehicle might report an unknown fuel type
E-Ray while using electric power might not be updating the dyno pages
Not all DAB Announcements Categories are available
After switching Users or doing an ignition cycle the Previous Trip data may reset
Bluetooth and Android Auto may not automatically connect
HUD might return to default pages after an ignition cycle
"Hummer Improving text layout when switching from Terrain to Offroad drive mode"
Stability improvement
While setting up trailer tire pressure sensors the wrong screen might show
Wi-Fi icon may be greyed out
When changing the language to Arabic the back button did not change
Changing the Startup or Shutdown volume is inconsistent
During an OTA the radio could continue to retry causing a battery drain
When switching to the Driver profile the Android Auto may disconnect
When saving an SXM favorite there may not be a short title
SXM may not show metadata
Norse translation for “Cut/Copy/Paste"
During an OTA the "Install" button may have to be pressed twice
If the customer cancels out of an OTA, the system might not go back to the expected screen
"Hummer Translation update for preconditioning screen"
"Hummer Offroad app may crash"

"Hummer When going into the Pitch and Roll page the screen might go black"
No SXM audio
"Hummer The OnStar Emergency calling screen may not show during certain emergency events"
"E-Ray The value shown on the dyno slider might not match the data in the graphs"
While using Alexa during the quick tour the right side of the screen may show "speaking"
When the data plan expires for the customer, there is no notice when trying to use Alexa
When the trailer tire temperature is high the trailer tire pressure screen on the cluster will flash frequently
When trying to use Google Voice Typing the screen may go back to the previous page
Improving scroll bar graphics in OTA screen
Alexa may not work for playing Spotify music
The customer was able to start using Alexa while in an OnStar call
When trying to add or remove Teen Driver keys the app may crash
CarPlay may get stuck on the incoming call screen
While in CarPlay if you try to use Google Assistant to switch to SXM the screen may go black
When the BCM loses connection with the trailer tire pressure sensors the values for the tires show as dashes
Translation and non-NA fixes
Not all DAB Announcements Categories are available
When changing the language to Arabic the back button did not change
Norse translation for Cut/Copy/Paste"
Version
Modified

4
Released August 17, 2023
Revised September 25, 2023 – Added the 2023 Model Year and 2022 Silverado and Sierra Models.
Revised November 13, 2023 – Added reference to newer software and removed Service Procedure and Warranty Information.
Revised December 20, 2023 - Removed Australia/New Zealand from Involved Regions or Country Section.